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patches/gcc/4.4.0/310-uclibc-conf.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun Sep 12 23:51:25 2010 +0200 (2010-09-12)
changeset 2123 ff2181adbd28
permissions -rw-r--r--
cc/gcc: disable complibs if not selected

Force gcc to not link with some companion libraries when
there are not needed (because selected-out).

There is no option to tell gcc *not* to build the Graphite and/or
LTO stuff. They *will* be built if gcc finds the suitable companion
libraries. If we do not provide them, but the host has them, then
gcc *will* find them, and link with them.

Consider the following:
- host has suitable PPL and CLooG (eg. Debian Squeeze)
- user wants to build gcc>=4.4
- user de-selects GRAPHITE
- gcc will find the hosts PPL and CLooG, and will use them
- the user moves the toolchain to an older host that does
not have them (eg. Debian Lenny)
- the toolchain fails, when it was properly setup not to

So, explicitly tell gcc *not* to use unneeded companion libs.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> 
     1 diff -durN gcc-4.4.0.orig/contrib/regression/objs-gcc.sh gcc-4.4.0/contrib/regression/objs-gcc.sh

     2 --- gcc-4.4.0.orig/contrib/regression/objs-gcc.sh	2009-04-10 01:23:07.000000000 +0200

     3 +++ gcc-4.4.0/contrib/regression/objs-gcc.sh	2009-05-27 21:38:53.000000000 +0200

     4 @@ -106,6 +106,10 @@

     5   then

     6    make all-gdb all-dejagnu all-ld || exit 1

     7    make install-gdb install-dejagnu install-ld || exit 1

     8 +elif [ $H_REAL_TARGET = $H_REAL_HOST -a $H_REAL_TARGET = i686-pc-linux-uclibc ]

     9 + then

    10 +  make all-gdb all-dejagnu all-ld || exit 1

    11 +  make install-gdb install-dejagnu install-ld || exit 1

    12  elif [ $H_REAL_TARGET = $H_REAL_HOST ] ; then

    13    make bootstrap || exit 1

    14    make install || exit 1

    15 diff -durN gcc-4.4.0.orig/libjava/classpath/ltconfig gcc-4.4.0/libjava/classpath/ltconfig

    16 --- gcc-4.4.0.orig/libjava/classpath/ltconfig	2007-06-04 01:18:43.000000000 +0200

    17 +++ gcc-4.4.0/libjava/classpath/ltconfig	2009-05-27 21:38:53.000000000 +0200

    18 @@ -603,7 +603,7 @@

    19  

    20  # Transform linux* to *-*-linux-gnu*, to support old configure scripts.

    21  case $host_os in

    22 -linux-gnu*) ;;

    23 +linux-gnu*|linux-uclibc*) ;;

    24  linux*) host=`echo $host | sed 's/^\(.*-.*-linux\)\(.*\)$/\1-gnu\2/'`

    25  esac

    26  

    27 @@ -1251,7 +1251,7 @@

    28    ;;

    29  

    30  # This must be Linux ELF.

    31 -linux-gnu*)

    32 +linux*)

    33    version_type=linux

    34    need_lib_prefix=no

    35    need_version=no
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